Grader-planer



April 2, `1935. F. M. HARGRAVE GRADER PLANER Filed May l2, 1934 2Sheets-Sheet l April 2, 1935. F. M, HARGRAVE GRADER PLANER :asheets-sheet 2 Filed May l2, 1934 67 ggg glu/uc nto/o Fred MHaryra/e lilPatented Apr. 2, 1935 UNITED STATES 1s Clarins; z

amanner as hereinafer set forth a grader-planerv for completelysmoothing vthe types of pavements as aforesaid without extraandexpensive equipmentand at a; minimum cost; for scarifying of low costroads and oiledv dirt'roads and streets; for cutting up large chunksafter a surface has been torn up by a scarierg f or cutting oilballs inoil mixed gravel work; `for mixing re-tread Work or oilgravel oroil sandmixed work; for drying gravel and stone before application of bitumen;for mixing or turning over oil or tar and gravel when following adistributer; Yfor smoothing'previously treated or untreated surfacesbefore the next-treatment thereof; foriurnishing a low cost originalpurchase machine which may be attached to any grader or motor patrol asan attachment thereby utilizing available equipment; for planing andsmoothing all types of bituminous pavements including low cost re-treadroads, oil vmixed gravel and sand roads and Voil treated dirt roadswithout additional expensive equipment and at a minimum operatingexpense; for maintaining lcorrugated gravel roads; kfor cutting sodongrassy road shoulders; for disking earth fills in grading work; fordisking vand smoothing a subgrade ahead of pavers; for diskingA longswales out cfa gravel or dirt road; and toattain these ends by a strong,durable, adjustable, low cost grader-planer for low cost constructionand maintenance 4and which may be coupled to any form of grader or motorpatrol as an attachment.

To-the above ends essentially, and to others which may hereinafterappear, the inventionconsists of such parts, and in such combination-ofparts which fall Within the scope of the invention as claimed.

In the drawings: t Figure 1 is a top plan-view partly in section of thegraderplarier,l l Y 1 Figure 2 is a perspective view of the-form` ofcutting disc, Figure 3 is a perspective'of the for the cutting discs, yc

f Figure 4 is a perspective view of the form ofdisc cleaning member,

Figure 5 is a perspective View of the `form of spacer for the cleaningmembers,

Figure 6 is a perspective view of the form of stiiener employed for abolt or pin,

form of separator Figure 7 is an elevation of vthe. grader planerlooking .towards one vend thereof and coupledto an adjusting elementtherefor, l

Figure 8 is a section on line 8 8, Figure 1.

The graderplaner includes a combined supporting and coupling structureI, a rotatable shaft 2 supported from thelatter, a series of spacedcutting discs 3 mounted onrand bodily moving with shaft 2a stationarycleaner device 4 for the discs A3, a series of separators 5 mounted onthe shaft 2V for .the discs 3, an adjustable thrust bear-- ing f3` forthe. shaft 2, vand a pair of adjustable combined disc binders ortighteners and Vshaft bearing elements 1. A Y

The structure 'Ig Whichis in the form of a horizontally disposedyokezopen atits rear, includes `a non-rotatable beam lief, H-shapedcontour in cross section formed, of a horizontally disposed at web 9, apair of vertical parallel anges Iil, I I, two spaced upstandingaperturedwebs I2, I3, two spacedpairs of spaced oppositely disposedangle irons Ill, I5, a pair of spaced parallel horizontally disposedhangers Ii:' I'I,r a pair vof adjustable coupling devices I8, I9, apairof spaced sets of combined stiienersand spacers 20, 2|, a pairY ofspaced sets of combinedzstifeners and spacers 22,- 23, a pair ofupstanding spaced parallellwebs 24, k25 and a pair of upstanding endclosure -webs 26, 21. Y

The opposed Afaces of the flanges I0, II centrally thereofA areintegralwiththe sides of web 9. The latter and the vanges are of the samelength. Preferably the Width of web 9 will be greater than the heightofthe flanges andis so shown. vThe websV I 2, I 3 are of like form andapertured in prox- PATENT-jorrit: E;

imitytoflange Il). The pair of webs `i2 are arranged inparallel spacedrelation and disposedbe.- tween thetransversemedian and one end of beam8. The `pair of Webs- I3 are arranged in parallel spaced .relation anddisposed between the transverse medianl and the other end of beam 8.Each of the webs I2, .I3 (Figure 8) is formed'of a rectangularlowerportion 28 andan upper portion 2S in Athe form` of a right angleVtriangle. The top edge of portion 29 extends at an upwardinclinationfrom ange ILD to ange I I. 'I'he lower portion 28 is arranged betweenand integral with the flanges I D, I I, as wellas being integral withthe upper faceof web 9. The portion 29 is positioned above the flangesIl), II and is formed in t proximity to its upper corner with an opening36. The openings 30 in thek webs I2 and I3 Valignbvvith each other. Thetwo pairs of angle irons' Id, I5 are positioned against and extendforwardly from the forward face of flange II. The pair-of irons vtheinnerends ofthe legs 3| ofY the pair.

I4 are arrangedbetween the transverse median and one end and the pair ofironsl5 between the transverse median and the other end of the beam 8.'Ihe angle'irons I4, |5 are'of like form and each includes a leg 3|arranged in alignment with a Web|2 or I3r and ra leg 32 which detachablyconnected to flange I I by holdfast means 33. The legs 3| of leach pairof irons arerarranged in parallel spaced relation, of :triangularcontour and formed atftheir outer ends with openins 34. The legs 32 ofeach pair `pf irons are square. The angle irons |4, I5V are spaced fromthe top and bottom edges of flange The legs 32 of each pair of angleirons extend in opposite Vdirecticlms with respect to each other and atright ,angles to The hangers I6, I1 are of like construction butoppositely disposed with respect to each otherj`and each includes anarm`35 anged at itsV innerv end, as at136, for the passage of holdfastmeans face at the ange I at an end of the'latter. The arm 35 isdisposedat right angles to flange |11. The outer end of arm 35 is formed with acylindrical enlargement 38y provided with a circular socket39 'openingat the'inner side-of the arm. The enlargement 38 at its outer Vend isprovided with anl opening 4|! communicating with the inner end of socket39. The wall of opening 46 `is threaded. The adjustable Icouplingdevices 18, I9

, peripherally threaded throughout.

The number of cuttingv discs 3 may be as desired are of likeconstruction and the 'description rof one will'apply to the other. Eachcoupling device is formed of a pivotally mounted section 4| providedwith a lengthwise extending" socket-42 having ja threaded wall and anadjustable'sectionw vin the form of an eye-bolt having' threadedengagement with the wall of Asocket 42; z 'I'he latter opens at'theouter 'end of section 4|. The inner end of section 4|, adjacent the'base of socket 42- is provided with an opening '44 for the passage of aheadedy pivot bolt 45. 'The bolt '45 of device I8 extends throughtheopen-ings of the webs I 2. The bolt 45 `of device. I 9 extendsthroughv the openings of the webs I3. Holdfast means ismounted on thenon-headed end of `a'bolt 45 and abuts the outer face of a web |2-'orI3.' 'The head V4'I raf a bolt 45 'abutsthe outer face-cf a'web I2 orI3. f The section 4| is mounted 'on a -bolt 45 at the 'center thereofand is maintained inV such position by 'a set of combined spacers andstiieners 2 6 or 2| and Veach of the latter consists of a' triangularshaped body 48 (Figure `r6) formed with an open-V ing 49 for the passageof, the shank Vof a bolt 45. The vcombined spacers and stiifeners of jaset 2U or 2| are arranged between thesection 4| ofV a coupling deviceandabut the inner faces of the pair of webs'l 2 or the pair of webs i3.V'I'he spacersyand stiifeners of a set may be adjusted so'as to maintainthe section 4| of a coupling device at different positions on, bolt 45.VMounted-in the aligning openings '34 of the legsv 3| Aof the pair Aofirons I4 is a headed bolt '50 for the ylowerendzof a hanger to bereferred to. Mounted in the aligning openings 34 ofthe legs ofthe'pairof irons l5 is .a headed bolts forthe lower end kof a hanger to bereferred to. The combined spacersand stillen-ers .22 are'mounted on thebolt 50 vand abut the flange Il. 'The combined spacers and stiffeners 23are mounted on f' the Vbolt `5| and abut the fiange II.v The combinedspacers 'and-stillen; ers 22 are positioned betweenthe hanger mounted onbolt 5|!and the inner faces of the legs 3| of the pair of 'irons I4. iThe combined spacers and stiff# Y enersf 2'3 are positioned between thehanger 75v mounted on bolt 5| .and the innerffaces of the legs 3| of thepair of irons I5. Each combined spacer and stiffener 22 or 23 is in theform'of a triangular shaped body 52 (Figure 8) formed with an opening 53for the passage of a bolt 50 or 5|.

-Preferably the stiffeners 22 or 23 will ce of thicker stock than thestiffeners 20 or 2|. The combined stiffeners and spacers 26 and 2|prevent the sections 4| of the coupling devices shifting lengthwise ofthe bolts 45. The combined stiffenvers and spacers 22 and 23 prevent theshifting of the hangers, which are mounted on the bolts 50, 5|lengthwise of the latter. Holdfast means 54 'for the bolts 59, 5| arecarried thereby and which abut the legs of one of the angle irons ofeach part. The webs 24, 25 are arranged in proximity to thelends of beam8 and are interposed between the .flanges I 5, as well as being integralwith the latter and theupper face of web'9. The webs 21|,V 25 aredisposed transversely of web 6 and flush with the top edges of flangesI0, I ,The webs 25, 2I are at the ends ycf beam 8; of the same height asflanges I0, Il and are integral with the ends of web!) and the ends offlanges I0,

Th'eshaft `2 is of a length to extend from within the hanger I6' to andwithin hanger and is Vformed of an intermediate portion 55 -of anysuitable contour, other than circular and is shown square; The shaft 2is formed with a pair 'of end portions 56 of circular cross section.Onlyone end'portion 56 is shown. The end portions are and are of likeform.. Y Each' disc 3 consists of a circular body part 5'|v ofconcave-convex cross section formed with an endless cutting edge 58andan axially arranged opening 59V correspond--V ing in contour toY that'o'f the intermediate portion 55 of shaft 2. in spaced relation'uponshaft 2 between the end portions 56 ofthe latter and bodily move withthe shaft. j Y e The stationary cleaner device r4 for the discs 3consists of a pair of spaced parallel angleshaped'bracketsV 66, eachformed of a horizontal leg 6| and an upstanding and rearwardly inclinedlegBZ extended above leg 6| and provided in proximity .to itsupper end with an opening 63. The lower end of leg 52 is integral withone side of leg 6|. The latter is anchored to the outerface of llange I0adjacent one end of said flange by the hold-fast means '64. The leg 62extends above and inclines` rearwardly from flange IB. Extending throughthe openings 63 in the legs 62'v is a squared' non-rotatable rod `65upon which is mounted the rectangular inner stretches 66 of a series ofspaced cleaner members 51. YThese latter also 'include tapered outerstretches 68 which are inclined laterally with respect to the outer endsof stretches 66 to be disposed in opposed closed'relation to the upperportions of the convex faces 'of the Adiscs '3.7 The cleaner membersS'Iextend rearwardly and downwardly at an inclination with respect to rodV65. The stretches '66 are formed with openings 38' corresponding incontour. to and for the pa'ssage'o rod 65, whereby 'the members 61 areheld sta tionary on said rod. The members 61 `are *main` tai-nedinspaced relation relative to each other upon rod 65 by tubular spacingsleeves 59 interposed between the stretches 66. The stretches 66 of theouter cleaner members 69 are arranged in abutting relation with theinner faces of legs 62 of the brackets 60. One end of the rod 65 isprovided with means, as at ||l to abut the'outer face of a leg 62 of oneof the brackets 63. The

The discs 53 are mountedv rod 85 extends beyond the outer-facev of therleg 62 of the other of the brackets 50 and'carries a tubular sleeve 1|whichat' one end'abuts the outer face of said leg. Mounted ony rod'85andA abutting the other end of sleeve 1| Vis an vabutment disc 12, whichis engaged by the-combined clamping and adjusting-nuts 13, threadedlyengaging with that end of rod 65 carrying the sleeve 1|. Thisarrangement secures the rod 55 to the brackets and maintains the sleeves69 in' binding engagement with the cleaner members 61.

Each of the separators Sconsists of an annular body part 14 havingarranged therein adjacent the ends thereof a web 15 formedwith an axialopening 16 of a diameter to clear the intermediate-portion 55 ofshaft 2.The web 15is circular and integral with the inner face of body part 14.The

face of one disc and the convex face of an adjacent disc.

The adjustable thrust bearing 6 for theishaft 2 is arranged in thesocket 3!V of the hanger l and it consists of a bearing element 11', ashiftable disc 18 abutting element 11 and an adjusting screw 19 for theldisc 18. The screwA 19 has threaded engagement with the wall of opening44 in the enlargement 38 of hanger I6.

The elements 1 are mounted in and extend inwardly from the sockets 39.'Ihe elements 1 are of like construction, but oppositely. disposed withrespectto each other. Each element 1 consists of a tubular member 80,formed at one inner end y with a laterally extending annular flange 8|provided with socketsi82 in its edge. Thebore 83 of member is threadedfor engagement with the threads on an end portion 56 of vthe shaft 2.

Positioned uponv the intermediate portion-55 of the shaft 2 is a pair ofspaced `slidable abutment members 84, 85, the former having aconvex'inner face and the latter a concave outer face.y Each of theabutment members is formed with an axial opening 86 of a diameter toclear the intermediate portion 55 of shaft 2. f The inner face of member84 abuts the concave face of one outer disc 3 and the inner face of`member 85 abuts the convex face of the other outer disc 3. The members84, 85 have their other faces abut elements 1.

The elements 1 after adjustment are keyed, as at 81, to the end portions56 of the shaft 2 to prevent the revolving thereof upon v.the latter.The sockets 82 in the flanges 8| are provided to selectively receive atool or other instrument (not shown) for the purpose of adjusting saidelements 1 lengthwise of shaft 2 for the purpose of binding the discs,separators and members 84,85 together upon shaft 2. The opening 40 inthe enlargement 38 of hanger |1 isv closed by a plug 88. Theenlargements 38 have oil lubricant supply fittings 89 opening into thesockets 39. K

It is well known that motor patrols or traction devices which carryadjustable moldboards, graders or other road working devices areprovided with what are termed horizontally disposed rings adjustable byrevolving them in a horizontal path for the purpose of adjusting themoldboard, graders, etc., to position them at different angles Whileroad making. lThe ring'or annulus `has depending therefrom apair ofhangers which are .coupled to the moldboard, grader, etc., Vto providetraction for and the '.bodily. adjusting` of.

the 4moldboard, Agrader by theV ringi,V The construction and arrangementof the. grader-planer in accordance with this invention enables itV tobe quickly installed with a motor patrol or traction device on theremoval of the moldboard or planer.Vr WithY reference to"Figure 'I theAring orV annulus referred to is shown and indicated at 80. Dependingfrom the ring 90 is a'pair of hangers 9|, only one of which 'is shown.'I'he hangers 9| have openings neartheir upper ends andi openingsat-.their lower end. The hangers 9|v when used in connection 'withthisinvention extend between angle irons of the-two pairs of angle ironsI4, l5. Thebolts 50, 5| extendthrough 93 of bolts 43 of the couplingVdevices I8, |9 and the up'perfopeningsv inV hangers 9|.Y The couplingdevices 8, I9` also' provide for adjusting the discs 3 whereby they maybesunk into the surface the desired depth depending upon the type f j ofsurfaces Vbeing worked. Y Y Among the advantages attained byaYgraderplaner in accordance with this invention are that it costs atleast 50% less than any other. machine capable of doing the same work;may be mounted on anygrader or Vmotor patrol in approximately thirtyminutes by removing the mold board and fastening the `disc-planer inthesame hangers;

no trailertype planerto haul around; lnolost motion; no-extrai machineto pull the planer,

unless mounted on a pull type grader; no extrav man needed to operatethe machine as the grader or patrol operator does the Work; nor tires ortrailer parts to `Wear out; the discsmay be swung in any direction ltooperate at any pitch, the same as a patrol-or grader blade, asexperience will tell' just what angle to swing the disks for the bestresults for classof work to-be done; as great `a cutting pressure can beplaced on the disks as on a grader blade, or approximately 9,000 poundsand bodily movable with the` shaft, `one-piece separators interposedbetween said discs and each having concave and convex ends abutting apair of opposed discs, each of said separators being formed with aninternal axially apertured web adjacent its ends for the passage of saidshaft, a pair of abutment members mounted upon the shaft and` one havinga concave face for abutting the convex face'of one of the outer discsofsaid series and the other having aconvexrface for abutting the cancaveface of the other outer disc of the series, a pairof adjustablecombineddisc binders and bearing elements for the `shaft adjustablyengaging with the ends of the-latterand bearing againsttheother'facesofsaid members,

means coacting-with said elements and shaft to prevent the revolving of.the former upon vthe latter when said elements are in adjusted posi-Ation, and a combined supporting and coupling v shaft and one having aconcave face forabutting the convex face of one of the outer discs ofsaid series and the other-having a. convex face4 for` abutting theconcave face Vof the other outerdisc of the series,-apairofadjustablecombined disc' binders and bearing 1elementsfor the 'shaftad-V justably engagingwith the ends of the latter and bearing againstthe other faces of said members,

means coacting with said elementsV and shaft to preventthe revolving ofthe former `upon the latter when said elements are inadjusted position,and a .combined supporting 4and coupling structure, said elements beingVrevolubly-mounted in said structure, andfsaid structure provided tolWith means having provisions for coupling it to a'traction and adjustingmeans therefor.

3. A grader planer comprising ashaft, va series of spaced concavo-convexAdiscs mounted Aupon and bodily movable with. the shaft, vone-,pieceseparators interposed betvveenA said discs and eachV having concaveand'convex ends abutting a pair of opposed discs,l yeach 'of saidseparators being formedxwith an internal axially apertured web adjacentkits ends forrthe passage cf said shaft, a pair lof abutment members.mounted upon the shaft and one having a concave .face for abutting theconvex faceof one lof the outer discs of said series land the otherhaving aconvex facegfcr abutting the concave face ofthe other routerdisc of the series, a pair of adjustable combined disc binders andbearing elements for the shaftfad.-v

justably engaging VWith the ends of the latter and bearing against theother faces of said members; means coacting with -said elements randshaft to prevent the revolving ofthe former upon the, latter when saidelements arecin adjusted position, a combined supporting and couplingstructure, said elements Abeing revolubly mounted vin said structure,and said structure provided with means having provisions for coupling`it to a traction'and adjusting means therefor, and' athrust bearing forone end of said shaft and one end of that ele-A ,end of the saidelement.

ment carried by said end of said shaft, said thrust bearing being.adjustable andpositioned within said structure in abutting relation to.Vthe said 4. A grader planer. comprising a shaft, a series of spaced'concave-convex discs jmounted upon and bodily movable with the shaft,one-piece separators interposedfbetween .said dises and each havingconcave vand convex ends abutting .a pair of lopposed discs, each ofvsaid separators being formed with an internal .axially aperturedz webadjacent its ends forfthe passagel of said shaft, a pair of abutmentmembers mounted upon the shaft and one having a concave .face forabutting the convex face of one `of the VVcarter-.discs of said seriesand the other having La convex face for abutting the concave face oftheeother outer .disc of the series, va pair'of adjustable combineddisc'binders and bearing elements for the shaft adjustably engaging with theends of the latter and lbearing against the other faces of said members,

means coacting with said elements and shaft vto Y prevent ,the revolvingofthe former upon the latv ter Vwhen'said elements are in adjustedposition,

Va combined supporting ,and coupling structure of yoke shape contourhaving'itsarms disposed horizontally, said arms constituting hangers,said hangers being formed with sockets, and said ele-` ments having aportion of their length revolubly mounted .in said sockets.

-5.:A grader planer, comprising a shaft, aiseries of spacedconcavo-'convex discs mounted upon and bodily movable with the shaft,one-piece separators vinterposed between said discs and each havingyvconcave andconvex ends abutting a pair of .opposed discs, each of saidseparators being formed with an internal axially apertured web adjacentits ends for the passage ofY said shaft, `a pair of abutment membersmounted upon the shaft and one having a concave face for abutting theconvex face of one of the outer discs of saidA having a portion of theirlength revolubly mounted in said sockets, and said structure-'providedwith means having provisions for coupling it to a traction and adjustingmeans therefor.

6. A grader planer comprising a shaft'y a series of spacedconcavo-convex discs mounted upon and bodily movable With the shaft,one-piece separators interposed between said discs and each havingconcave and convex ends` abutting a pair of opposed discs, each ofA saidseparators being formed with an internal axially apertured webV adjacentits ends for the passage of said shaft, a pair of abutment membersmounted upon the shaft and one having a concave face for abutting theconvex face of one of the outer discs of said series and the otherhavingy a convex face for abutting the concave face of the other outerdisc of the series, a pair of adjustable combined disc binders andbearingelements for-the shaft ad justably engaging with the ends of thelatter and bearing against the other faces of said members,

Vmeans coacting With said elements and shaft to prevent the revolving ofthe former upon the latter when .saidelements are in adjusted position,aV combined Lsupporting'and coupling structure of yoke shape contourhaving its arms disposed horizontally, saidV arm constituting hangers,said hangers being formed with sockets, said elements having a portionof their length Y revolubly mounted in said sockets, said structureprovided With means having provisions for coupling it to a traction and-adjusting means therefor, and an adjustable thrust bearing mounted inone of said sockets and i abutting that element extending thereinto.

V'-7. A grader planer comprising a shaft, a lseries of `spacedconcavo-convex Vdiscs 'mounted upon and bodily movable WithY the shaft,one-piece separators interposed between `said discs and each havingconcave and convex ends abutting a pair of opposed discs, each of saidseparators being form-ed with an internal axially apertured web adjacentits ends forrtherpassage of saidshaft, a pair of abutment membersVmounted upon the shaft and one having a concave facefor abutting theconvex face of one of the outer discs of said series and the otheryhaving a convex face'for abutting the concave face of the other outerdisc of the series, a pair of adjustable combined disc.

bind-ers and bearing elements for the shaft ad-r Y justably engagingwith'the ends of the latter and bearing against the -other'fac'es ofsaid members, means coacting with said elements and shaft to preventthe'revolving of' the former upon'the lattei` when said elements are inadjusted position, and a combined supporting and coupling structure,said elementsbeing revolubly'mounted in said structure-and havinglaterally disposed annular flanges at their outer ends.

8. A grader planer comprising ra shaft,v a series of spacedconcavo-convex discs mounted'upon .and bodily movable With theY shaft,one-piece separators interposed between said discs and each havingconcave and convex ends abutting a vpair of opposed discs, each of saidseparators being formed with an internal axially apertured webY adjacentits 7ends for. the passage of said shaft, a pair ofabutment membersmount-ed upon the .shaft and onehaving `a concave face for abutting theconvexface of one of the outer discs of saidV seriesand the other havinga convex face for abutting the concave .face of the other outer disc ofthe series, a pair of adjustable combined disc binders andbearingelementsffor the shaft adjustably engaging with the ends ofA the latterand bearing against the other `faces of said members, means coactingwithsaid elements and shaft to prevent the revolving ofthe formeruponthe Ylatter when said elements are' in adjusted position,

a combined supporting and coupling structure of yoke shape contourhaving. its arms disposed horizontally, said arms constituting hangers,said hangers being formed with sockets'and said elements having aportion of their length revolubly mounted vin said socket'sand beingformed at their outer ends with laterally disposed Vannular flanges. i

9. vA grader planer comprising a shaft, a series of spacedconcave-convex discs mounted upon and bodily movable with the shaft,one-piece separators interposedbetween saidv discs and each havingconcave and convex ends abutting a pair of opposeddiscs, each of saidseparators being formed with an internal axially` apertured web adjacentits ends for the passage of said shaft, 'a

pair ofabutment Amembers mounted upon the shaft and one having a;concave face for abuttingY ythe convex face of one of the outer discsof'said series and the other having a convex face for abutting theconcave face of theother outer disc of the series, a pair ofadjustablercombined disc binders and bearing elements` for the shaftVadjustably engaging with the ends of the latter andbearing against theother faces of said members, means coacting with said elements and shaftto prevent the revolving of the former upon the latter when saidelements are in adjusted position, a combined supporting and couplingstructure, said elements being revolubly mounted in said structure, andsaid structure being provided with spaced adjustable coupling devicesfor connecting it to a traction means therefor and with spaced means forconnecting it to an adjusting means therefor.

l0. A grader planer comprising a shaft, a series of spacedconcavo-convex discs mounted upon and bodily movable with the shaft,one-piece separators interposed between. said discs and each havingconcave and convex ends abutting a pair of opposed' discs, each of saidseparators being formed with an internal axially apertured web adjacent.its ends for the passage of said shaft, a pair of abutment membersmounted upon the shaftfankl lone having al concave face for abutting theconvex face of .one of the outer discs of saidY series and the otherhaving a'convex face for abutting the concave vface Vof the other outerdisc of the series, a pair of adjustable .combined disc binders andbearing elements for the shaft adjustably engaging with theends ofthe'latter and bearing against the other faces of said members, meanscoacting with said elements and shaftto prevent the revolving 'oftheformer-upon f the latter Vwhen* said elements are in adjusted plingstructure, said elements being revolubly mounted in said structure, saidstructure being provided with spaced adjustable coupling devices forconnectingit to a traction means therefor and with spaced means forconnecting it to an adjusting means therefor, said. coupling devicesbeingpositioned ,at the .top of said structure, and said spaced meansbeingarranged at the front of said structure.

11. A grader planer comprising a shaft,` a series 'of spacedccncavo-convex discs` mounted upon andbodily movable withthe shaft,one-piece bearing against the otherfaces of said members, means coactingwith saidV elements and shaft to prevent the revolving of the formerupon the latter when said elementsV areinadjusted position, a combinedsupporting and coupling structure,

-said elements being revolubly mounted in said structure, said structureprovided with pivots for coupling it to a traction and to an V'adjustingmeans therefor, and combined spacers and stiffeners mounted Yon saidpivots for and between which is adapted to be disposed the said tractionand the said adjusting meansis extended.

12. In a graderjplaner, a horizontally disposed .supportingY structurecommon to a plurality of bodily revoluble cutting discs fand to aplurality `of stationary cleaner membersforrsaid discs, said structurehaving spacedmeans at its front for Y coupling it to an adjusting meanstherefor forming an elementofa traction devicaspaced .adjustablecouplers extending forwardly from said structure for connecting it to'said adjusting means, means for pivotally connecting said couplings tothe top of said structure, and combined stiffenersand spacers for andconnected to said 20 position, anda combined supporting and couy 1Vjustably engaging with the ends Aof the latter and spaced means and forand connected to the means i for pivotally connecting said couplings'tothertop ofsaid structure.

13. In a grader planer a horizontally disposed supporting structurecommon to a set of bodily revoluble cutting'discsA and a setofstationary cleaner` members and: having spaced means at its front forcoupling it to an adjusting means therefor forming an element of atraction device,

'y spacedadjustable coupling devices extending forwardly from saidstructure v.for connecting-it to .ends of the sides of'said structure, aseries of spacedcutting discs carried vby and bodily movable with saidshaft, a pair of spaced endwise aligning adjustabletubular shaft'bearing and disc tightener elements threadedly engaging with andencompassing said endY terminal portions of the shaft, saidelementsbeing revolubly mounted in and extending from the inner faces of thesides of said structure at the rear endof the latter, vertical hangermeans, meansV for connecting the lower end of said hanger means to saidstructure, and adjusting means for said structure connected to the'topof the front of the latter and to the upper portion of said hangermeans.

15. In a grader-planer, a. mobile horizontally disposed yoke shapedstructure. open at its rear, a horizontally disposed revoluble shafthaving its end terminal portions extending into the rear ends of thesides of said structure, a series Vof spaced cutting discs carried byand bodily movable with said shaft, a pair of spaced endwise aligning'adjustable tubular shaft bearing-and disc tightener elements threadedlyengaging with and encompassing said end terminal 'portions of the shaft,said elements being revolubly mounted in and extending from theinnerrfaces of the sides of said structure at the rear end of thelatter, vertical hanger means, means extending forwardlyk from the frontof said structure and extending through andstraddling thelower end'ofsaid hanger'means for connecting the latter to said structure,and'adjusting means for said structure connected tothe top ofthe forwardend of the'latter andV to the upper portion of said hanger means. v Y

16. In aV grader-planer, a'mobile horizontally disposed yoke shapedstructure open'at its rear, a horizontally disposed revoluble shaft-having its end terminal portions extending into the rear ends of thesidesV of said structure, afseries of spaced cutting discs carried Ybyand bodily movable with said shaft, a pair of ,spacedv endwise aligningadjustable tubular shaft bearing and ydisc tightener'elements threadedlyengaging with and encompassing said end terminal portions of thev shaft,said elements being revolubly mounted in and extending from the innerfaces of the sides of said structure at the rear/end of the latter,Vertical hanger means, a horizontally disposed revoluble annulusconnected rto the upper end of said hanger means, spaced'means arrangedat the front of said structure and extend- Y clined spaced adjustingmeans for said structure connected at the upper end to the upper portionof the hanger means, and spaced means upon the top ofthe front end ofsaid structure extending .through and straddlingthe lower end of saidadjusting means for connecting the latter to the front end of thestructure. A

- 17. In a grader-planer, a mobile horizontally revoluble structureprovided withv hanger means, a horizontally disposed yoke open at itsrear, closed at its front and extended laterally in opposite directionswith respect to Vsaid structure, a shaft positioned within .and havingits end terminal portions extending into the sides of the yoke, a seriesof cutting discs. mounted. on the shaft, separators interposed betweenthe discs, a pair of spaced endwise aligning Ladjustable tubular bearingand tightener elements encompassing andv threadedly engaging with theend terminal portions of said shaft, said elements being revolublymounted in and projecting from the inner faces of the sides of saidyoke, abutments interposed between said elements and theouter of thediscs of said series, said elements providing, when adjusted inadirection towards said abutments, the binding of the discs, separatorsand abutments on the shaft whereby the latter said discs,separatorsVabutments and elementswill bodily revolve together relativeto the yoke, spaced means extended forwardly from thev front of the yokefor connecting to the latter the lower' end 'of said hanger means,adjusting means for the yoke extending rearwardly from the upper portionof, said hanger means, and spaced means upon the top of the forward endof the yoke for connecting to the latter the said adjusting means.

18. In a grader-planer, a planer structure including a horizontallydisposed yoke and a series of revoluble cutting discs; said yoke open atits rear end and closed at its front end, a horizontally revolublemobile structure including wardly inclined adjusting means for the yokeconnected at the upper end thereof to the upper portion of the hangermeans, bolt elements arranged at thetop of the front end of said yoke,supports for the bolt elements, the lower end of said adjusting meansextending into said supports, saidbolt elements extending through thelower end of Vsaid adjusting means, and stiffeners within said supportsand mounted on the bolt elements at opposite sides of the lower end ofthe adjusting means.

F`. M. HARGRAVE.

